Hoist.



T. G. wme uTsow &1. M. RINGQUIST.

HOIST- APPLICATION FILED AUGII l9l7- 1,263,305. Patented Apr. 16,1918.

4 SHEETS-SHEET 1- T. e. WRIGHTSON &1. ML RINGQUIST.

I HOIST. APPLICATION FILED AUG-7.1917- .1 ,263,305- I Patented Apr. 16, 1918.

4 SHEETS-SHEET 2.

. T. e. WRIGHTSON & 1'. M. RlNGQUl'ST.

HOIST.

. APPLICATION FILED AUG-7. 1917.

1,263,305. Patented-Apr. '1 91s.

4 SHEETS-S 3.

fizz/2222273 7/9/ T. G. wmemsom &1. M. RINGQUIST.

HOIST- APPLICATIQN FILED AUGJ. 1911. 1,263,305. Patented Apr. 1 18.

' 4 SHEETS-SH T UNITED srarns arana @FEIGEF THoMAs G. wniei-frson Aub es'wtsj 1V1. aiNGouIsT, or riionnABr-oii-ariEs; ENGLAnnnssIGNons oHEAn, wnmn'rs'on AND COMPANY, LIMITED, or

THOBNABY-ON-TEES, ENGLAND;

HOIST.

speci cation of Letters Patent.

Patented'Apr. 16, 1 918.

Application filed August 7, 1917; Serial No. 184,864.

T 0 all whom it may concern:

Be it known that we, THOMAS GARMoNos- WAY WRIGHTSON and JUs'rUs MAGNUs RING- QUIST, subjects of the King of Great Britain, residing at Teesdale Iron Works, Thornabyon-Tees, England, have invented a new and useful Improvement in Hoists, of which the following is a specification.

This invention relates to improvements in and connected with hoists especially adapted for charging blast furnaces. In such hoists a carriage which is raised and lowered'in or upon a hoist frame supports a skip or bucket.

According to this invention the skip descends by its own weight to deliver its charge and means independent of the hoisting rope are provided for lowering the skip;

The invention is illustrated by the accompanying; drawings, Figure 1 of which is a diagrammatic vlew of a blast furnace and hoist; Fig. 2 is a plan and Fig. 3 a side elevation of a carriage and skip in an' arrange ment when one toggle lever is employed, and Figs. 4 and 5 are similar views when two toggle levers are employed.

1' is an inclined hoist frame the top of which is above the mouth 2 of abla'st furnace 3. 4 is' a carriage which supports a skip 5 and which has-wheels 6 running on rails 7 on the hoist; the carriage is raised and lowered upon the hoist frame 1' by means of a hoisting rope 8 whichpasses'over pulleys 9, 10, to a winding drum 11, the

weight" of the carriage and skip, being bal-* anced by a counterweight 121 13'is a rope by means of which the skip is'lowered" as hereinafter described, and which is attached to the carriage'4 and passes'around apulley 14 to the winding drum 11.

Referring to Figs. 2 and 3, the carriage 4 consists of two crossheads 15, 16, of the width of the hoist frame 1', connected together by a toggle lever whose'two members 17, 18, are pivoted together at 19 a friction roller 20 being mounted on the pivot. The

hoisting rope 8 is connected to the lower crosshead 16, and another rope 21 for supporting the skip passes over a pulley 22 and is also attached to the crosshead 16. The rope 13 is attached to the crosshead 16 and is led to the winding drum as before stated. On the hoist frame 1 is a guide 23 upon which the friction roller 20 runs causing the toggle lever to hold the crossheads 15, 16,

apart. At the top of the hoist the gu'ide28 extends away from the hoist asshown at 24', thus'leaving the pivot" 19 unsupported and allowing the crosshead 16 to approach the crosshead 15 'under'the'action of the weight of the skip 5. The lowering ofthe skip to the mouth of the furnace is controlled by the rope 13.

In Figs. 4 and 5 the carriage as before consists of two crossheads 15, 16, which are held apart by two toggle levers, one consisting'of two members 25, 26, pivoted together at 27' and having a, friction roller 28 upon the pivot, while the other consists of two members29, 30, pivoted together at 31 and having a friction roller 32 upon the pivot. In this case two guides 33 and 34 are provided, one at each side of the hoist.

In operating the hoist the skip 5 is attached to the carriage 4 at the bottom of the hoist as shown in full lines in the drawing; the hoisting rope 8 is then wound on to. the

drum 11 causing the carriage 4 to ascend until it reaches the top'of the hoist as shown in dotted lines. The skip is then lowered on to the top of the furnace to deliver its charge. V

The method of operatingthe-hoist andthe details of construction of the carriage are the subject of a concurrent application Serial frame, a carriage traveling upon the rails,

a skip supported by the carriage, r opefor hoisting the carriage, a toggle lever-pivotedto the carriage, means for controlling the movement of the toggle lever, and arope' connected to the toggle lever for lowering the'skip; p

2. A hoistframe, a carriage traveling upon the frame, a skipsuppor'ted the carriage, arope' for hoisting the carriage, a toggle leverpivoted to the carriage,mean s for controlling the movements of the toggle lever, and a rope connected to the toggle lever for lowering the skip.

3. A- hoist frame, rails upon the hoist frame, a carriage traveling upon the rails, a skip supported by the carriage, a rope for hoisting the carriage, a crosshead on the carriage, a hoisting rope attached to the crosshead, another rope supporting the sklp and attached to the crosshead, a toggle lever pivoted to the crosshead and the carriage, a guide on the hoist controlling the movement of the toggle lever and means controlled independently of the hoisting rope for lowering the skip.

4. A hoist frame, rails upon the hoist frame, a carriage traveling upon the rails, a skip supported by the carriage, a rope for hoisting the carriage, two crossheads on the carriage, the hoisting rope being attached to one crosshead, another rope supporting the skip and attached to the same crosshead, a toggle lever pivoted to the crossheads, a guide on the hoist controlling the movement of the toggle lever and means controlled independently of the hoisting rope for lowering the skip.

5. A hoist frame, rails upon the hoist frame, a carriage traveling upon the rails, a skip supported by the carriage, a rope for hoisting the carriage, a crosshead on the carriage, a hoisting rope attached to the crosshead, another rope supporting the skip and attached to the crosshead, a toggle lever pivoted to the crosshead and the carriage, means for controlling the movement of the toggle lever and means controlled in- I dependently of the hoisting rope for lowering the skip.

6. A hoist frame, rails upon the hoist frame, a carriage traveling upon the rails, a skip supported by the carriage, a rope for hoisting the carriage, two crossheads on the carriage, the hoisting rope being attached to one crosshead, another rope supporting the skip and attached to the same crosshead, a toggle lever pivoted to the crossheads, means for controlling the movement of the toggle lever and means controlled independently of the hoisting rope for lowering the ski 7 A hoist frame, rails upon the hoist frame, a carriage traveling upon the rails, a skip supported by the carriage, a rope for hoisting the carriage, a crosshead on the carriage, a hoisting rope attached to the crosshead, another rope supporting the skip and attached to the crosshead, a toggle lever pivoted to the crosshead and the carriage, a guide on the hoist controlling the move ment of the toggle lever and a rope attached to the crosshead for lowering the skip.

8. A hoist frame, rails upon the hoist frame, a carriage traveling upon the rails, a

skip supported by the carriage, a rope for hoisting the carriage, a crosshead on the carriage, a hoisting rope attached to the crosshead, another rope supporting the skip and attached to the crosshead, a toggle lever pivoted to the crosshead and the carriage, means for controlling the movement of the toggle lever and a rope attached to the cross head for lowering the skip.

9. A hoist frame, rails upon the hoist frame, a carriage traveling upon the rails, a skip supported by the carriage, a rope for hoisting the carriage, a crosshead on the carriage, a hoisting rope attached to the crosshead, another rope supporting the skip and attached to the crosshead, toggle levers pivoted to the crosshead and the carriage, guides on the hoist controlling the movement of the toggle levers and means controlled independently of the hoisting rope for lowering the skip.

10. A hoist frame, rails upon the hoist frame, a carriage traveling upon the rails,

a skip supported by the carriage, a rope for hoisting the carriage, a crosshead on the carriage, a hoisting rope attached to the crosshead, another rope supporting the skip and attached to the crosshead, toggle levers pivoted to the crosshead and the carriage, guides on the hoist controlling the movement of the toggle levers and a rope attached to the crosshead for lowering the skip. v

11. In a hoist for charging blast furnaces and the like, a hoist frame, a carriage traveling upon said frame, a skip carried by said carriage, a cable for connecting said skip with said carriage passing over a relatively stationary point of suspension on said carriage and having one end secured to said skip, supporting means mounted in said carriage and movable relatively thereto to which the other end of said cable is connected, means on said hoist frame for effecting the movement of said relatively movable supporting means, a hoist rope con-.

nected to said relatively movable supporting means, and a second rope connected to said relatively movable supporting means for controlling the lowering of the skip.

In testimony that we claim the foregoing as our invention, We have signed our names this 11th day of July, 1917.

T. G. WRIGHTSON. [1,. s.] J. M. RINGQUIST. [Ls] Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, 30.0. 

